Joanna K. Polko

1-Aminocyclopropane-1-carboxylic acid oxidase determines the fate of ethylene biosynthesis in a tissue-specific way

Houben Maarten, Vaughan-Hirsch John, Pattyn Jolien, Wangshu Mou et autres

In seed plants, ethylene is produced from 1-aminocyclopropane-1-carboxylic acid (ACC) by the enzyme ACC oxidase (ACO). Despite the critical role of ACO in ethylene biosynthesis, the ACO gene family has not been fully characterized in Arabidopsis (Arabidopsis thaliana). This study investigated the …

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The Regulation of Cellulose Biosynthesis in Plants

Joanna K. Polko, Joseph J. Kieber

Cell walls define the shape of plant cells, controlling the extent and orientation of cell elongation, and hence organ growth. The main load-bearing component of plant cell walls is cellulose, and how plants regulate its biosynthesis during development and in response to …

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Ethylene-independent modulation of root development by ACC via downregulation of WOX5 and group I CLE peptide expression.

Joanna K. Polko, Isaiah Taylor, Bram Van de Poel, Joseph J. Kieber et autres

In seed plants, the canonical role of 1-aminocyclopropane-1-carboxylic acid (ACC) is to serve as the precursor in the biosynthesis of the phytohormone ethylene, and indeed, ACC treatment is often used as a proxy for ethylene treatment. Increasing evidence suggests that ACC can …

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SHOU4 Proteins Regulate Trafficking of Cellulose Synthase Complexes to the Plasma Membrane

Stephanie M. Doctor, William J. Barnes, Cătălin Voiniciuc, Charles T. Anderson et autres

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Integrated omics reveal novel functions and underlying mechanisms of the receptor kinase FERONIA in Arabidopsis thaliana

Joanna K. Polko, Justin W. Walley, Ella Katz, Diane C. Bassham et autres

The receptor kinase FERONIA (FER) is a versatile regulator of plant growth and development, biotic and abiotic stress responses, and reproduction. To gain new insights into the molecular interplay of these processes and to identify new FER functions, we carried out quantitative …

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Meta‐analysis of transcriptomic studies of cytokinin‐treated rice roots defines a core set of cytokinin response genes

G. Eric Schaller, Joseph J. Kieber, Christian A. Burr, Kevin C. Potter et autres

Cytokinins regulate diverse aspects of plant growth and development, primarily through modulation of gene expression. The cytokinin-responsive transcriptome has been thoroughly described in dicots, especially Arabidopsis, but much less so in monocots. Here, we present a meta-analysis of five different transcriptomic analyses …

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1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator

Joanna K. Polko, Joseph J. Kieber

1-Aminocyclopropane 1-carboxylic acid (ACC) is the direct precursor of the plant hormone ethylene. ACC is synthesized from S-adenosyl-L-methionine (SAM) by ACC synthases (ACSs) and subsequently oxidized to ethylene by ACC oxidases (ACOs). Exogenous ACC application has been used as a proxy for …

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Ethylene-independent modulation of root development by ACC via downregulation of WOX5 and group I CLE peptide expression

Wangshu Mou, Ria Khare, Joanna K. Polko, Isaiah Taylor et autres

In seed plants, the canonical role of 1-aminocyclopropane-1-carboxylic acid (ACC) is to serve as the precursor in the biosynthesis of the phytohormone ethylene, and indeed, ACC treatment is often used as a proxy for ethylene treatment. Increasing evidence suggests that ACC can …

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Integrated omics reveal novel functions and underlying mechanisms of the receptor kinase FERONIA inArabidopsis thaliana

Ping Wang, Natalie M. Clark, Trevor M. Nolan, Gaoyuan Song et autres

The receptor kinase FERONIA (FER) is a versatile regulator of plant growth and development, biotic and abiotic stress responses, and reproduction. To gain new insights into the molecular interplay of these processes and to identify new FER functions, we carried out quantitative …

us (code pays fourni par la source)

Meta‐analysis of transcriptomic studies of cytokinin‐treated rice roots defines a core set of cytokinin response genes

Joanna K. Polko, Kevin C. Potter, Christian A. Burr, G. Eric Schaller et autres

Cytokinins regulate diverse aspects of plant growth and development, primarily through modulation of gene expression. The cytokinin-responsive transcriptome has been thoroughly described in dicots, especially Arabidopsis, but much less so in monocots. Here, we present a meta-analysis of five different transcriptomic analyses …

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Alterations in Auxin Homeostasis Suppress Defects in Cell Wall Function

Blaire Steinwand, Mike Westafer, Shou‐Ling Xu, Stephanie M. Doctor et autres

The plant cell wall is a highly dynamic structure that changes in response to both environmental and developmental cues. It plays important roles throughout plant growth and development in determining the orientation and extent of cell expansion, providing structural support and acting …

1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator

Joanna K. Polko, Joseph J. Kieber

-adenosyl-L-methionine (SAM) by ACC synthases (ACSs) and subsequently oxidized to ethylene by ACC oxidases (ACOs). Exogenous ACC application has been used as a proxy for ethylene in numerous studies as it is readily converted by nearly all plant tissues to ethylene. However, …

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